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1. WO2018147188 - PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2018/147188
Publication Date 16.08.2018
International Application No. PCT/JP2018/003614
International Filing Date 02.02.2018
IPC
F02F 3/12 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
10having surface coverings
12on piston heads
F02B 23/10 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
08with positive ignition
10with separate admission of air and fuel into cylinder
F02F 3/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
F02F 3/10 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
10having surface coverings
CPC
F01L 2301/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2301Using particular materials
02Using ceramic materials
F02B 23/0639
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
02with compression ignition
06the combustion space being arranged in working piston
0636the combustion space having a substantially flat and horizontal bottom
0639the combustion space having substantially the shape of a cylinder
F02B 23/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
08with positive ignition
10with separate admission of air and fuel into cylinder
F02F 2200/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
2200Manufacturing
F02F 3/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons 
10having surface coverings
12on piston heads
F05C 2201/021
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
2201Metals
02Light metals
021Aluminium
Applicants
  • 日立オートモティブシステムズ株式会社 HITACHI AUTOMOTIVE SYSTEMS, LTD. [JP]/[JP]
Inventors
  • 助川 義寛 SUKEGAWA Yoshihiro
  • 高橋 智一 TAKAHASHI Norikazu
  • 杉本 一等 SUGIMOTO Ittou
Agents
  • ポレール特許業務法人 POLAIRE I.P.C.
Priority Data
2017-02227409.02.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR
(FR) PISTON POUR MOTEUR À COMBUSTION INTERNE ET SON PROCÉDÉ DE FABRICATION
(JA) 内燃機関用ピストン及びその製造方法
Abstract
(EN) Provided is a piston for an internal combustion engine, the piston enabling both an improvement in heat efficiency and a reduction in emissions, and enabling the prevention of overheating of the piston to prevent the occurrence of knocking, pre-ignition, and a drop in air filling efficiency. This piston (100a) for an internal combustion engine constitutes a portion of a combustion chamber (9) of an internal combustion engine (200) and includes a substrate (103), a first film (101) provided on a section of the top surface of the substrate (103) contacting the combustion chamber (9), and a second film (102) provided on another section of the top surface. The piston for the internal combustion engine is characterized in that: the first film (101) has a lower heat conductivity and heat capacity than the substrate (103), and the second film (102) has a lower heat conductivity than the substrate (103) and a higher heat capacity than the first film (101).
(FR) Piston pour un moteur à combustion interne, le piston permettant à la fois une amélioration de l'efficacité thermique et une réduction des émissions, et permettant la prévention de surchauffe du piston pour empêcher l'apparition de cognement, de pré-allumage et d'une baisse de l'efficacité de remplissage d'air. Ce piston (100a) pour un moteur à combustion interne constitue une partie d'une chambre de combustion (9) d'un moteur à combustion interne (200) et comprend un substrat (103), un premier film (101) disposé sur une section de la surface supérieure du substrat (103) en contact avec la chambre de combustion (9), et un second film (102) disposé sur une autre section de la surface supérieure. Le piston pour le moteur à combustion interne est caractérisé en ce que : le premier film (101) a une conductivité thermique et une capacité thermique inférieures à celles du substrat (103), et le second film (102) a une conductivité thermique inférieure à celle du substrat (103) et une capacité thermique supérieure à celle du premier film (101).
(JA) 熱効率の向上とエミッション低減を両立し、かつ、ピストンの過熱を防止してノッキング、プレイグニッションの発生及び空気充填効率の低下の防止することができる内燃機関用ピストンを提供する。本発明に係る内燃機関用ピストン(100a)は、内燃機関(200)の燃焼室(9)の一部を構成するピストンであって、基材(103)と、基材(103)の燃焼室(9)と接する頂面の一部分に設けられた第1の膜(101)と、頂面の他の部分に設けられた第2の膜(102)と、を有し、第1の膜(101)は、基材(103)よりも熱伝導率及び熱容量が小さく、第2の膜(102)は、基材(103)よりも熱伝導率が小さく、かつ、第1の膜(101)よりも熱容量が大きいことを特徴とする。
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